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Simple improvements
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This reverts commit 9bf1a0db4acbbf9e8e6f707250269185224e7efe, reversing
changes made to fed97091b9546d369a240d10b184793d49247dd3.
Conflicts:
activerecord/test/cases/transaction_callbacks_test.rb
Reason: This fix introduces another issue described at #8937, so we are
reverting it to restore the behavior of 3-2-stable.
We will fix both issues when we come out with a better solution
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Fixes #3002. Also see #5494.
```
class Comment < ActiveRecord::Base
belongs_to :post
end
class Author < ActiveRecord::Base
has_many :posts
end
class Post < ActiveRecord::Base
belongs_to :author
has_many :comments
end
```
`Comment.joins(:post).merge(Post.joins(:author).merge(Author.where(:name => "Joe Blogs"))).all` would
fail with `ActiveRecord::ConfigurationError: Association named 'author' was not found on Comment`.
It is failing because `all` is being called on relation which looks like this after all the merging:
`{:joins=>[:post, :author], :where=>[#<Arel::Nodes::Equality: ....}`. In this relation all the context that
`Post` was joined with `Author` is lost and hence the error that `author` was not found on `Comment`.
Ths solution is to build JoinAssociation when two relations with join information are being merged. And later
while building the arel use the previously built `JoinAssociation` record in `JoinDependency#graft` to
build the right from clause.
Thanks to Jared Armstrong (https://github.com/armstrjare) for most of the work. I ported it to make it
compatible with new code base.
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PerThreadRegistry module.
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Delegating the value getter and setters in the ScopeRegistry
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current ScopeRegister object.
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Current code stores the klass name in active_record and this
is used throughout. While reviewing the code time and again
I had the mental picture of active_record being an instance of
a klass. However here the actual klass is being stored in
@active_record.
Secondly at two different places while referring to @active_record
the comment refers to it as base klass. All this points to
active_record being not the best variable name.
So I thought it is better to replace active_record with base_klass.
This change is confined to JoinDependency, JoinBase, JoinPart and
JoinAssociation - all joining related work.
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current_scope and ignore_default_scope locals are brought together under
a registry object.
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If the reflection scope is not flagged with distinct value, there is no
need to iterate over the records, so we avoid that by doing the check
before iterating rather than inside the iteration block.
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method to signify an exception possibly being raised.
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See #10107.
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* railstest:
do not blow away the test database on every run
just check pending migrations in the current environment
check pending migrations against the test db
only match the default task
test no longer makes sense after requiring all test files
switch the testing tests to use rake
a test file can be provided to rake, e.g.:
switch to Rails::TestTask
default task should also be in the test env
ensure the schema checking is done in the dev connection
Revert "Update Rake tasks to call `rails test` instead"
Revert "Warning removed unused variable task_name"
apps that depend on active record should load fixtures
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* master: (44 commits)
Improve the changelog entry [ci skip]
Fix explicit names on multiple file fields
Correctly parse bigint defaults in PostgreSQL
Move changelog to the top [ci skip]
Fix indent and remove extra white spaces
Fix scope chaining + STI
failing test for #9869
Improve `belongs_to touch: true` timestamp test
Sort modules in alphabetical order.
Avoid an attempt to fetch old record when id was not present in touch callback
Use the correct pk field from the reflected class to find the old record
Refactor mail_to to not generate intermediate hashes when adding href
Ensure mail_to helper does not modify the given html options hash
Use inspect when writing the foreign key from the reflection
Use a space after the comment sign when showing the result of commands
Exclude template files for rdoc API [ci skip]
template should have generic name
use | to have more intent revealing code
Revert "Merge pull request #10034 from benofsky/fix_skipping_object_callback_filters"
stop depending on callbacks
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Conflicts:
railties/test/application/rake_test.rb
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Correctly parse bigint defaults in PostgreSQL
Conflicts:
activerecord/CHANGELOG.md
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Association with inverse_of does not set the parent in association building block
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This fixes inconsistency when building children of association
which has inverse_of set properly.
When creating new association object with a block:
parent.association.build do |child|
child.parent.equal?(parent) # false
end
So the block the `child.parent` did not point to the same object.
But when the object is created it points to same instance:
child = parent.association.build
child.parent.equal?(parent) # true
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Avoid calling define_method in CollectionProxy#scope
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See #9869 and #9929.
The problem arises from the following example:
class Project < ActiveRecord::Base
scope :completed, -> { where completed: true }
end
class MajorProject < Project
end
When calling:
MajorProject.where(tasks_count: 10).completed
This expands to:
MajorProject.where(tasks_count: 10).scoping {
MajorProject.completed
}
However the lambda for the `completed` scope is defined on Project. This
means that when it is called, `self` is Project rather than
MajorProject. So it expands to:
MajorProject.where(tasks_count: 10).scoping {
Project.where(completed: true)
}
Since the scoping was applied on MajorProject, and not Project, this
fails to apply the tasks_count condition.
The solution is to make scoping apply across STI classes. I am slightly
concerned about the possible side-effects of this, but no tests fail and
it seems ok. I guess we'll see.
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Sort modules in active_record.rb
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Round off time to a whole second value to compensate for databases
that don't support fractional timestamps. Also add a assertion to
check that the old record is touched when the association is cleared.
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The implementation was using the source class foreign key field instead
of the reflected primary key one to find the old record.
For instance, for this scenario
class Bulb < ActiveRecord::Base
belongs_to :car, :touch => true
end
class Car < ActiveRecord::Base
has_many :bulbs
end
the current implementation was trying to do this query:
Car.where(car_id: X).first
where we should be doing this query:
Car.where(id: X).first
This should hopefully fix the build.
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If we don't use inspect inside the class_eval block then the foreign key
is written without quotes causing us to fetch the foreign key value and
not the column name.
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http://guides.rubyonrails.org/api_documentation_guidelines.html#example-code
[ci skip]
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Collection of small fixes. Check individual commits for background.
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thanks to @egilburg for suggestion
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has_many through obeys order on through association
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fixes #10016
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minor fixes including variable name change and expanded rdoc
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